Finding the Fourth Proportional to 2,004.20, 2,765.85 and 1,120.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,004.20 : 2,765.85 = 1,120.10 : x
2. Step 2: Convert to fraction form
   2,004.20/2,765.85 = 1,120.10/x
3. Step 3: Cross multiply
   2,004.20x = 2,765.85 × 1,120.10
4. Step 4: Simplify right side
   2,004.20x = 3,098,028.59
5. Step 5: Solve for x
   x = 3,098,028.59/2,004.20
6. Step 6: Final answer
   x = 1,545.77